eSSL Security

eSSL KR503-E RFID Card Reader – 125KHz EM for Access Control

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KR503-E Proximity Card Reader

The KR503-E Proximity Card Reader is a reliable 125KHz RFID reader designed for access control applications. It supports RS485 communication and delivers fast, stable card reading performance with a read range of up to 10 cm. Its compact design and durable build make it suitable for indoor and semi-outdoor installations.

Key Features

125KHz proximity card reader
Read range up to 10 cm
RS485 communication interface
Fast card reading time ≤ 300 ms
Supports 26-bit and 34-bit Wiegand output (default)
Dual-color LED indicator (Red / Green)
Built-in buzzer support
External LED and buzzer control input ports
Compact and durable black housing

Technical Specifications

Specification	Details
Model	KR503-E
Product Type	Proximity Card Reader
Card Frequency	125 KHz
Read Range	Up to 10 cm
Communication	RS485
Reading Time	≤ 300 ms
Operating Voltage	DC 6–14V
Current	Max 70 mA
Output Format	26-bit / 34-bit Wiegand (Default)
LED Indicator	Red / Green Dual Color LED
Buzzer	Yes
Input Ports	External LED Control, External Buzzer Control
Operating Temperature	-20°C to +65°C
Operating Humidity	10% – 90% RH (Non-condensing)
Dimensions (W × H × T)	116 × 75 × 17.3 mm